HERNDON, VIRGINIA

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Elevation: 98 meters Latitude: 38 57N Longitude: 077 27W

WEATHER

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Number of Records: 213,900; Date Range: 1/1/95 - 3/22/16

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WEATHER ALMANAC - 29 OCTOBER, 2014

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[ °F ] °C

Weather Element	Average	High	Low
Temperature	12.8 ^°C	19.4 ^°C (12:52 am)	7 ^°C (9:57 pm)
Dewpoint	10.4 ^°C	14.4 ^°C (12:52 am)	7 ^°C (9:57 pm)
Humidity	86.8 ^%	100 ^% (7:52 pm)	58 ^% (10:52 am)
Barometer	1014.6 ^hPa	1015.9 hPa (9:57 pm)	1012.5 hPa (1:52 am)
Wind Speed	7.7 ^km/h	25.9 ^km/h (10:52 am)
Wind Gust		38.9 ^km/h (10:52 am)

Weather Element	Average
Visibility	12.7 ^km
Wind Direction	S (176.8 °)

Weather Element	Total
Precipitation	2.54 ^mm
Heating Degree Days	5.2 (Base 18.3)
Growing Degree Days	3.2 (Base 10)

Averaged from 31 records on 29 October, 2014

WEATHER CONDITIONS BREAKOUT

WIND DIRECTION BREAKOUT

WEATHER BY HOUR - 29 OCTOBER, 2014

[ °F ] °C

Local Time	Temperature	Dewpoint	Humidity	Barometer	Visibility	Wind Direction	Wind Speed	Gust Speed	Precipitation	Events	Conditions
12:52 AM	19.4 ^°C	14.4 ^°C	73 ^%	1012.9 hPa	16.1 ^km	SSW (200°)	13 ^km/h				Overcast
1:52 AM	18.3 ^°C	14.4 ^°C	78 ^%	1012.5 hPa	16.1 ^km	South (180°)	13 ^km/h				Overcast
2:52 AM	17.8 ^°C	13.9 ^°C	78 ^%	1012.9 hPa	16.1 ^km	South (180°)	11.1 ^km/h				Mostly Cloudy
3:52 AM	16.7 ^°C	13.9 ^°C	84 ^%	1012.5 hPa	14.5 ^km	SSW (210°)	7.4 ^km/h				Mostly Cloudy
4:52 AM	16.1 ^°C	13.3 ^°C	83 ^%	1012.9 hPa	14.5 ^km	South (190°)	5.6 ^km/h				Mostly Cloudy
5:52 AM	15.6 ^°C	13.3 ^°C	86 ^%	1013.2 hPa	16.1 ^km	SSW (210°)	5.6 ^km/h				Mostly Cloudy
6:52 AM	13.3 ^°C	12.2 ^°C	93 ^%	1012.9 hPa	16.1 ^km	Calm					Clear
7:52 AM	15 ^°C	12.2 ^°C	83 ^%	1013.5 hPa	16.1 ^km	NNW (330°)	7.4 ^km/h				Mostly Cloudy
8:52 AM	16.7 ^°C	10 ^°C	65 ^%	1013.9 hPa	16.1 ^km	North (350°)	18.5 ^km/h				Mostly Cloudy
9:52 AM	17.2 ^°C	10 ^°C	63 ^%	1014.6 hPa	16.1 ^km	North (350°)	14.8 ^km/h				Mostly Cloudy
10:52 AM	17.8 ^°C	9.4 ^°C	58 ^%	1014.6 hPa	16.1 ^km	NNW (330°)	25.9 ^km/h	38.9 ^km/h			Mostly Cloudy
11:52 AM	15 ^°C	7.8 ^°C	62 ^%	1015.2 hPa	16.1 ^km	NNW (330°)	25.9 ^km/h				Mostly Cloudy
12:52 PM	12.8 ^°C	9.4 ^°C	80 ^%	1015.2 hPa	16.1 ^km	NNW (330°)	16.7 ^km/h		0 mm	Rain	Light Rain
1:24 PM	12 ^°C	11 ^°C	94 ^%	1014.9 hPa	2.4 ^km	North (350°)	11.1 ^km/h		0 mm	Rain	Light Rain
1:37 PM	12 ^°C	11 ^°C	94 ^%	1014.9 hPa	4.8 ^km	North (350°)	9.3 ^km/h		0.51 mm	Rain	Light Rain
1:52 PM	12.2 ^°C	11.1 ^°C	93 ^%	1014.9 hPa	6.4 ^km	North (350°)	11.1 ^km/h		0.51 mm	Rain	Light Rain
2:45 PM	12 ^°C	11 ^°C	94 ^%	1014.2 hPa	8 ^km	North (350°)	9.3 ^km/h		0.76 mm	Rain	Light Rain
2:52 PM	12.2 ^°C	10.6 ^°C	90 ^%	1014.2 hPa	8 ^km	NNW (340°)	11.1 ^km/h		0.76 mm	Rain	Light Rain
3:52 PM	12.8 ^°C	10 ^°C	83 ^%	1014.2 hPa	16.1 ^km	Variable	5.6 ^km/h		0 mm		Overcast
4:52 PM	13.3 ^°C	10.6 ^°C	84 ^%	1014.2 hPa	16.1 ^km	Calm					Mostly Cloudy
5:52 PM	12.8 ^°C	11.1 ^°C	89 ^%	1014.6 hPa	16.1 ^km	Calm					Mostly Cloudy
6:52 PM	11.1 ^°C	10.6 ^°C	97 ^%	1015.2 hPa	16.1 ^km	Calm					Mostly Cloudy
7:52 PM	10 ^°C	10 ^°C	100 ^%	1015.6 hPa	16.1 ^km	Calm					Scattered Clouds
8:44 PM	9 ^°C	9 ^°C	100 ^%	1015.6 hPa	11.3 ^km	Calm				Fog	Patches of Fog
8:52 PM	8.3 ^°C	8.3 ^°C	100 ^%	1015.6 hPa	11.3 ^km	Calm				Fog	Patches of Fog
9:52 PM	8.3 ^°C	7.8 ^°C	97 ^%	1015.6 hPa	8 ^km	Calm				Fog	Patches of Fog
9:57 PM	7 ^°C	7 ^°C	100 ^%	1015.9 hPa	4 ^km	Calm				Fog	Patches of Fog
10:06 PM	7 ^°C	7 ^°C	100 ^%	1015.9 hPa	4 ^km	Calm				Fog	Patches of Fog
10:27 PM	8 ^°C	7 ^°C	93 ^%	1015.9 hPa	6.4 ^km	WSW (250°)	5.6 ^km/h			Fog	Patches of Fog
10:52 PM	8.3 ^°C	8.3 ^°C	100 ^%	1015.9 hPa	14.5 ^km	WNW (300°)	9.3 ^km/h				Clear
11:52 PM	7.8 ^°C	7.2 ^°C	96 ^%	1015.9 hPa	16.1 ^km	Calm					Clear

Hourly data recorded from KIAD, located 0 kilometers away from Herndon, Virginia